
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

/**
 * AUTO-GENERATED FILE. DO NOT MODIFY.
 */

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
import { parseConditionalExpression } from '../../util/conditionalExpression.js';
import { hasOwn, createHashMap } from 'zrender/lib/core/util.js';
import { makePrintable, throwError } from '../../util/log.js';
export var filterTransform = {
	type: 'echarts:filter',
	// PENDING: enhance to filter by index rather than create new data
	transform: function (params) {
		// [Caveat] Fail-Fast:
		// Do not return the whole dataset unless user config indicates it explicitly.
		// For example, if no condition is specified by mistake, returning an empty result
		// is better than returning the entire raw source for the user to find the mistake.
		var upstream = params.upstream;
		var rawItem;
		var condition = parseConditionalExpression(params.config, {
			valueGetterAttrMap: createHashMap({
				dimension: true
			}),
			prepareGetValue: function (exprOption) {
				var errMsg = '';
				var dimLoose = exprOption.dimension;

				if (!hasOwn(exprOption, 'dimension')) {
					if (process.env.NODE_ENV !== 'production') {
						errMsg = makePrintable('Relation condition must has prop "dimension" specified.', 'Illegal condition:', exprOption);
					}

					throwError(errMsg);
				}

				var dimInfo = upstream.getDimensionInfo(dimLoose);

				if (!dimInfo) {
					if (process.env.NODE_ENV !== 'production') {
						errMsg = makePrintable('Can not find dimension info via: ' + dimLoose + '.\n', 'Existing dimensions: ', upstream.cloneAllDimensionInfo(), '.\n', 'Illegal condition:', exprOption, '.\n');
					}

					throwError(errMsg);
				}

				return {
					dimIdx: dimInfo.index
				};
			},
			getValue: function (param) {
				return upstream.retrieveValueFromItem(rawItem, param.dimIdx);
			}
		});
		var resultData = [];

		for (var i = 0, len = upstream.count(); i < len; i++) {
			rawItem = upstream.getRawDataItem(i);

			if (condition.evaluate()) {
				resultData.push(rawItem);
			}
		}

		return {
			data: resultData
		};
	}
};